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	Gold Nanoparticles on Mesoporous SiO2-Coated Magnetic Fe3O4 Spheres: A Magnetically Separatable Catalyst with Good Thermal Stability
	于洪波，Zhen Ma ; Huan Liu 1,†, Chao Lin 2,†, Zhen Ma 3,*, Hongbo Yu 4,* and Shenghu Zhou 4
刊名	Molecules
	2013-11-18
期号	11页码:14258—14267
通讯作者	于洪波，Zhen Ma
合作状况	李雨桐
中文摘要	Fe3O4 spheres with an average size of 273 nm were prepared in the presence of CTAB by a solvothermal method. The spheres were modified by a thin layer of SiO2, and then coated by mesoporous SiO2 (m-SiO2) films, by using TEOS as a precursor and CTAB as a soft template. The resulting m-SiO2/Fe3O4 spheres, with an average particle size of 320 nm, a high surface area (656 m2/g), and ordered nanopores (average pore size 2.5 nm), were loaded with gold nanoparticles (average size 3.3 nm). The presence of m-SiO2 coating could stabilize gold nanoparticles against sintering at 500 °C. The material showed better performance than a conventional Au/SiO2 catalyst in catalytic reduction of p-nitrophenol with NaBH4. It can be separated from the reaction mixture by a magnet and be recycled without obvious loss of catalytic activity. Relevant characterization by XRD, TEM, N2 adsorption-desorption, and magnetic measurements were conducted.
学科主题	催化化学
原文出处	其他国内刊物
公开日期	2013-12-16
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/10094]
专题	宁波材料技术与工程研究所_宁波所知识产出
推荐引用方式 GB/T 7714	于洪波，Zhen Ma,Huan Liu 1,†, Chao Lin 2,†, Zhen Ma 3,*, Hongbo Yu 4,* and Shenghu Zhou 4. Gold Nanoparticles on Mesoporous SiO2-Coated Magnetic Fe3O4 Spheres: A Magnetically Separatable Catalyst with Good Thermal Stability[J]. Molecules,2013(11):14258—14267.
APA	于洪波，Zhen Ma,&Huan Liu 1,†, Chao Lin 2,†, Zhen Ma 3,*, Hongbo Yu 4,* and Shenghu Zhou 4.(2013).Gold Nanoparticles on Mesoporous SiO2-Coated Magnetic Fe3O4 Spheres: A Magnetically Separatable Catalyst with Good Thermal Stability.Molecules(11),14258—14267.
MLA	于洪波，Zhen Ma,et al."Gold Nanoparticles on Mesoporous SiO2-Coated Magnetic Fe3O4 Spheres: A Magnetically Separatable Catalyst with Good Thermal Stability".Molecules .11(2013):14258—14267.

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